//
//  UIColor+LJ.m
//

#import "UIColor+LJ.h"

@implementation UIColor (LJ)

+ (UIColor *)colorWithHexString:(NSString *)color alpha:(CGFloat)alpha{
    
    NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
    
    
    if ([cString length] < 6)
    {
        return [UIColor clearColor];
    }
    

    if ([cString hasPrefix:@"0X"] || [cString hasPrefix:@"0x"])
    {
        cString = [cString substringFromIndex:2];
    }
    
    if ([cString hasPrefix:@"#"])
    {
        cString = [cString substringFromIndex:1];
    }
  
    if ([cString length] != 6)
    {
        return [UIColor clearColor];
    }
    
   
    NSRange range;
    range.location = 0;
    range.length = 2;
    //r
    NSString *rString = [cString substringWithRange:range];
    //g
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
    //b
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
    

    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];
    return [UIColor colorWithRed:(r / 255.0f) green:(g / 255.0f) blue:(b / 255.0f) alpha:alpha];
}


+ (UIColor *)colorWithHexString:(NSString *)color
{
    return [self colorWithHexString:color alpha:1.0f];
}

@end
